diff --git a/pintagptin.py b/pintagptin.py
new file mode 100644
index 0000000..acb942b
--- /dev/null
+++ b/pintagptin.py
@@ -0,0 +1,58 @@
+
+def write_file_title(f, title):
+    f.write("#*#*#{}#*#*#\n".format(title))
+
+def write_section_separator(f):
+    f.write("-------------------------------------------------\n")
+
+def write_section_title(f, title):
+    f.write("#****{}****#\n".format(title))
+
+def write_param(f, name, value):
+    padded_value_str = str(value).ljust(8, ' ')
+    f.write("{}: {}\n".format(padded_value_str,name))
+
+def write_str(f, string):
+    f.write(string+'\n')
+
+def write_gptool_in(filename, item):
+    with open(filename, 'w') as f:
+        write_file_title(f, "gptool input file v2.0")
+        write_section_separator(f)
+        
+        write_section_title(f, "Mode of observation")
+        write_param(f, "Beam mode", "PA")
+        write_param(f, "Polarization mode (0-> intesity, 1-> stokes data)", pol_mode(item))
+        write_param(f, "Sample size of data (in bytes, usually 2)", 2)
+        write_section_separator(f)
+
+        write_section_title(f, "Observation Paramaters")
+        write_param(f, "Frequency band (lowest value in MHz)", lowest_freq(item))
+        write_param(f, "Bandwidth(in Mhz)", item.bandwidth)
+        write_param(f, "Sideband flag (-1-> decreasing +1-> increasing)", sideband_flag(item))
+        write_param(f, "Number of channels", item.nchan)
+        write_param(f, "Sampling Interval (in ms)", item.tsmpl*1000)
+        write_section_separator(f)
+
+                
+
+        write_section_title(f, "Dedispersion & Folding parameters")
+        write_param(f, "Number of bins in folded profile (-1 for native resolution)", -1)
+
+def pol_mode(item):
+    return 0 if item.npol==1 else 1
+
+def lowest_freq(item):
+    if item.sideband == 'LSB':
+        return item.freq_lo - item.bandwidth
+    else:
+        return item.freq_lo
+
+def sideband_flag(item):
+    if item.sideband == 'LSB':
+        return "-1"
+    else:
+        return "+1"
+
+
+#*** Observation Paramaters****#